Good Clouds / Evil Clouds

Global warming is a hot topic, covered by all kinds of media. But why does our planet heat up? Are "evil" clouds behind all this?

Univ. Lect. Mag. Werner Gruber clarifies and produces his own clouds in a special experiment.

Later on Univ. Prof. Dr. Heinz Oberhummer explains how we can prevent more damage and cool down Earth: Either with a parasol in space or also by painting our roofs.

At the end of this clip, the Science Busters have another suggestion, which however is a bit more radical.